Invincible Iron Man: The Search for Tony Stark

okay. okay. God knows I don't read every Marvel book that's out there. Can someone pls tell me how long Actual Leonardo DaVinci has been part of the Marvel universe?! Is he...new here...? Why did he appear so casually in the narrative. Is he immortal or a time traveler.



?!

anyway this book was weird but a lot of fun!